Yafang Shao f5b7a97920 cgroup: Make operations on the cgroup root_list RCU safe ...

commit d23b5c577715892c87533b13923306acc6243f93 upstream.

At present, when we perform operations on the cgroup root_list, we must
hold the cgroup_mutex, which is a relatively heavyweight lock. In reality,
we can make operations on this list RCU-safe, eliminating the need to hold
the cgroup_mutex during traversal. Modifications to the list only occur in
the cgroup root setup and destroy paths, which should be infrequent in a
production environment. In contrast, traversal may occur frequently.
Therefore, making it RCU-safe would be beneficial.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-08-19 06:00:06 +02:00

..

cgroup-internal.h

cgroup: Make operations on the cgroup root_list RCU safe

2024-08-19 06:00:06 +02:00

cgroup-v1.c

kernfs: Convert kernfs_path_from_node_locked() from strlcpy() to strscpy()

2024-08-03 08:48:54 +02:00

cgroup.c

cgroup: Make operations on the cgroup root_list RCU safe

2024-08-19 06:00:06 +02:00

cpuset.c

cgroup/cpuset: Prevent UAF in proc_cpuset_show()

2024-08-03 08:48:54 +02:00

debug.c

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freezer.c

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legacy_freezer.c

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Makefile

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misc.c

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namespace.c

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pids.c

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rdma.c

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rstat.c

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